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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

new wiring harness?

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Old Aug 25, 2011 | 06:34 PM
  #1  
patrtiotwarriors's Avatar
patrtiotwarriors
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new wiring harness?

hey ya'all,

about a year ago i bought a 1996 ford f150 xl. It has a 4.9l in it with a 5 spd manual tranny. It also has a 6 inch lift sitting on pro comp 35"s. the thing is a beast but being a guy i want more torque to push the tires faster. i want to swap out the 300 for a 302. does anyone know if i can use the old wiring harness off the 4.9l for the new engine?
 
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Old Aug 25, 2011 | 06:47 PM
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ostrx250
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you will need to get a new harness and ecm but if your gonna go there might as well look for a 351 jmo good luck
 
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Old Aug 25, 2011 | 06:49 PM
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patrtiotwarriors
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yea thats what i thought...id go for a 351 but the tranny i got wont handle all that torque and i dont have the money to replace the tranny and engine
 
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Old Aug 25, 2011 | 07:10 PM
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bashby
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Save your money, a 302 wont be much if any better than the 300 (lot of work to gain 2 CID!)
 
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Old Aug 25, 2011 | 07:35 PM
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I agree you will need ECM and wire harness. I have a 92 f150 6" suspension 4" body lift 35 12.50 15 tires and I have the 302. It does a fine job of turning the tires. Oh I also did a axle swap on it. Got the staight axles out of a 79 Bronco and installed them.
 
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Old Aug 25, 2011 | 08:04 PM
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88rustyred
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just keep the 300. at lower rpm, it has more torque than a 302
 
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